Gaya APA

Eicker.Ursula, . (2014). Energy Efficient Buildings with Solar and Geothermal Resources (E-Book) . United Kingdom: Jhon Willey & Sons.

Gaya MLA

Eicker.Ursula, . "Energy Efficient Buildings with Solar and Geothermal Resources (E-Book)". United Kingdom: Jhon Willey & Sons, 2014. E-book.